Ink roll



J. F. OHM ER April 30, 1929.

INK ROLL Filed June 27, 1927 H M w T A Patented Apr. 30, 1929.

UNITED STATES PATENT OFFICE.

JOHN I. OHMER, DAYTON, OHIO, ASSIGNOR TO OHMER FARE REGISTER COI PANY, OF DAYTON, OHIO.

INK ROLL.

Application filed June 27,

This invention is an improvement in ink rolls, and while it could be used to advantage in any kind of a printing machine, 1ts greatest usefulness would be in those machlnes which are more or less intermittently used, such as cash registers, ticket printing and issuing machines and other such mechanisms.

Heretofore, ink rolls have been supplied with ink from the periphery or exterior of the rolls. It is usually found in operation that when the ink roll is not used for a few hours the ink on the surface dries, and thereafter the ink does not flow freely on the type or the electroplate. This is particularly noticeable during the first few operations after the machine has been idle for a more or less extended period of time.

This invention relates to improvements whereby a quantity of ink may be stored in a hollow tube having perforations therein and through which the ink will pass and be absorbed by the felt roll, or other absorbent material, by capillary attraction. The ink passes to the outer periphery of the felt roll, thereby maintaining the felt roll in more or less a saturated condition at all times.

The invention further relates to a simple and easy means for injecting a new supply of ink into the hollow tube or core, and means are provided for closing the inlet to the core.

In the drawings, Fig. 1 represents a side elevational view of my improved roll partly cut away.

Fig. 2 is a cross sectional view thereof.

Fig. 3 is a cross sectional view on the line 3-3 of Fig. 2.

Fig. 4 is a cross sectional view on the line 4-4.- of Fig. 2, looking in the direction of the arrow.

Fig. 5 is a cross sectional view on the line 55 of Fig. 2, looking in the direction of the arrow.

Fig. 6 is a view similar to Fig. 5, showing the closure disk in another position.

Fig. 7 is a cross sectional view on the line 7 7 of Fig. 2, looking in the direction of the arrow, and Fig. 8 is a fragmentary view of a machine in which my improved ink roll may be employed.

Referring more particularly to the draw ings, the improved ink roll is mounted on two stud shafts 1 and 2. The shaft 2 terminates in a cup-shaped portion comprising a disk 3 having secured thereto a cylinder 5. The

1927. Serial No. 201,584.

I disk 3 is provided with apertures 4. The

shaft 2 has secured thereto a collar 6, and a spring 7 is coiled about the shaft 2 and is interposed between the collar 6 and a closure disk 8 which is provided with one or more apertures 9 which may be brought into alignment with the apertures 4. I preferto employ two apertures 41 and two apertures 9, so that mk may be inserted through one of the apertures 9 and 4, while the other apertures 9 and 4 allow a passage for the egress of air. After the ink has been inserted, the closure disk .8 is rotated from the position shown in Flg. 5 to that shown in Fig. 6, in which latter figure the apertures are not in alignment and the ink, therefore, cannot leak.

The shaft 1 is also provided with a cupshaped extremity 10. The cup-shaped portions on the shafts 1 and 2 are connected by means of a core or tube 11, forming an ink reservoir, having perforations 12 therein, which core or tube is secured to the cup shaped portions by means of pins 13, the outer circumference of the core being approximately the same as the inner circumference of the cup-shaped portion. Between the cupshaped portions, and surrounding the core 11, are a plurality of rings of felt, or other absorbent material, 14.

The apertures 4 are, as shown, in alignment With the core 11, and I have, therefore, cut away a short portion of the core 11 as indicated at 15 to allow free passage of ink into the core or a free passage of air therefrom.

In Fig. 8, I have diagrammatically illustrated one form of machine in which my improved ink roll may be employed to advantage, in which figure a printing member 16 is provided with type 17. My improved ink roll is indicated at 18 and is adapted to be moved into contact with the type 17, inking the same, the ink roller being carried by a carrier 19 which also carries a platen 20 over which passes a strip of paper 21. As the carrier 19 moves to the left when viewed in Fig. 8, the ink roll 18 inks the type 17, and immediately thereafter the platen 20 presses the paper strip 21 against the type 17, printing the same.

' When it is desired to refill the ink roll, the closure disk 8 is rotated so that the apertures 4 and 9 are in alignment, whereupon the core may be filled with ink through the said apertures, while any air that may be in the core will pass therefrom through the other apertures 4 and 9. As soon as the core has been filled, the closure disk 8 is rotated into the position shown in Fig. 6 so that the apertures will not be in alignment. The spring 7 holds the closure 8 in whatever position it may be placed. In my preferred construction, the spring 7 simply presses against the closure disk 8 and holds it by friction, but, if dcsired. the inner end of the spring may be imbedded in the closure disk so as to hold it in the position shown in Fig. 6, unless it is roiated and held in the position shown in Fig. 5. .In case it were so constructed, it would be obvious that after refilling the core, the spring 7 would automatically close the apertures and thereby prevent leakage.

It is obvious that many modifications may be made in the specific form of the invention shown by way of example in this application. I, therefore, desire to cover the same broadly regardless of the specific form of construction, provided said construct on fairly falls within the scope of the following claims.

Having now described my invention, I claim 1. An ink roll consisting of a. closed ink core, an absorbent material carried by said core, communicating means between said core and absorbent material, said core communicating with a plurality of orifices whereby ink may be introduced within said core, and any air within the same may find its egress.

2. An ink roll consisting of a closed ink core, having perforations therein, a disk provided with an aperture closing one end of said core, and a closure disk having an aperture, said apertures, when in alignment, serving as a single passageway through which ink may be introduced within said roll.

3. An ink roll consisting of a closed ink core, having perforations in the periphery thereof, a disk provided with a plurality of apertures closing one end of said core, and a closure disk having apertures corresponding to the apertures in said disk, said apertures, when in alignment, serving as a passageway through which ink may be introduced and through which air may find its egress.

4. An ink roll consisting of a closed ink core, having perforations therein, a disk provided with an aperture closing one end of said core, a closure disk having an aperture, said apertures, when in alignment, serving as a single passageway through which ink may be introduced within said roll, and means to hold said closure disk in position.

5. An ink roll consisting of a closed ink core, having perforations therein, a disk provided with an aperture closing one end of said core, a closure disk having an aperture,

said apertures, when in alignment, serving as a single assageway through which ink may be introdiiced Within said roll, and a spring pressing against said closure disk so as to hold the same in position.

6. An ink roll consisting of two shafts, cup-shaped portions forming a part of said shafts, an ink core secured to said cup-shaped portions, said core being provided with perforations in the circumference thereof, a disk provided with apertures uniting one of said shafts to the cup-shaped portion thereof, a closure disk provided with similar apertures rotatably mounted on said last mentioned shaft, and means whereby said closure disk is pressed tightly against said last mentioned cup-shaped portion.

7. An ink roll consisting of an ink core, a plurality of shafts having cup-shaped portions, the bottom of one of said portions being provided with apertures, a closure disk mounted on one of said shafts and provided with similar apertures to the apertures in the bottom of said cup-shaped portion, means whereby said closure disk is pressed against the bottom of said eup shaped portion and is frictionally held so that the apertures Will be either in or out of alignment so that ink may be introduced at will when the apertures are in alignment and the ink will be prevented from leaking when the apertures are not in alignment, and absorbent means car ried by said core and in communication with apertures therein.

8. An ink roll consisting of a closed ink core having perforations therein and provided with an aperture through which ink may be inserted, and a closure member having an aperture, said apertures when in alignment serving as an ink passageway through which ink may be introduced within said roll.

9. An ink roll consisting of a closed ink core having perforations in the periphery thereof and provided with a plurality of apertures, and a closure member having apertures corresponding to the apertures in the core, said apertures when in alignment servmg as a passageway through which ink may be introduced and through which air may find its egress.

10. An ink roll consisting of a closed ink core provided with an aperture, a closure member having an aperture, said apertures when in alignment serving as a single passageway through which ink may be introduced within said roll, and means to hold said member normally in position so that its aperture will be out of alignn'ient with the aperture of the core.

In testimony whereof I aflix my signature.

JOHN F. OHMER. 

